Question

what is the dominant intermolecular force found between hydrogen iodide molecules? purple = i, white = h dispersion forces ion-dipole forces hydrogen bonding dipole-dipole forces

Explanation:

Hydrogen iodide (HI) is a polar molecule due to the electronegativity difference between H and I, but it lacks a hydrogen atom bonded to highly electronegative atoms (F, O, N) required for hydrogen bonding. Ion-dipole forces involve ions and polar molecules, which is not the case here. Dispersion forces exist in all molecules, but dipole-dipole forces are stronger between polar HI molecules and thus dominant.

Answer:

dipole-dipole forces